The 1TB WD Blue, the WD10EZEX, is conventionally recorded, so unlike some of its siblings it will not wreck a rebuild. It is still a desktop drive with a desktop duty cycle and warranty, and WD Red Plus exists for this job.
Western Digital publishes a model-level list of which of its client drives are shingled, and the WD10EZEX is not on it. The list closes by stating that all other capacity points use conventional recording, which makes this a manufacturer statement rather than an inference.
That matters because other drives in the same WD Blue family are shingled: the 2TB WD20EZAZ and the 6TB WD60EZAZ are both named on that list. The family answer and the model answer differ, which is the recurring theme of this entire section of the site.
So a WD10EZEX will not produce the rebuild pathology that makes shingled drives dangerous in arrays. One objection removed.
WD Blue is positioned as a desktop drive and warranted accordingly, typically for two years. A NAS runs continuously at 8760 hours a year, which is a different duty cycle from the one a desktop line is specified against.
Multi-bay vibration is the second issue. Several drives spinning in one chassis transmit rotational vibration to each other, and NAS-positioned lines carry sensors and firmware tuning for that where desktop lines generally do not.
Error recovery timing is the third and least discussed. NAS-oriented firmware limits how long a drive spends trying to recover a bad sector, so the controller does not conclude the drive has failed. Desktop firmware can retry for long enough that a RAID controller drops the drive from the array, a healthy drive ejected because it was being thorough.
None of those are dramatic on their own, and together they are the reason a NAS line exists at all.
WD Red Plus is the same manufacturer's answer, conventionally recorded across the line with a three-year warranty and NAS-oriented firmware. Toshiba N300 and Seagate IronWolf occupy the same position from the other two makers.
There is also a size argument. 1TB is a small drive for an array and the cost per terabyte at that capacity is poor. Fewer, larger drives means fewer components to fail and fewer rebuilds, and rebuilds are the operation you least want to repeat.
The live table below shows conventionally-recorded drives in stock now, so you can see what the upgrade actually costs today rather than in principle.
| Model | Capacity | Recording | Live price | |
|---|---|---|---|---|
| WD10EZEX WD WD Blue | 1TB | CMR | — | Not in stock |
| WD20EFZX WD WD Red Plus | 2TB | CMR | — | Not in stock |
A dash under live price means we do not currently track that exact model in stock. The recording badge comes from the manufacturer document linked on each model's page.
| Drive | Capacity | Recording | $/TB | Price | |
|---|---|---|---|---|---|
| MG03SCA200 2TB SAS 6G | 2TB | CMR | $22.00 | $44 | Buy |
| P2000 2TB SAS 6G 7.2K | 2TB | CMR | $34.49 | $69 | Buy |
| 2TB SATA 6G 7200RPM | 2TB | CMR | $50.00 | $100 | Buy |
| Easystore 2TB USB External | 2TB | CMR | $54.50 | $109 | Buy |
| MG03ACA200 2TB SATA Enterprise | 2TB | CMR | $59.95 | $120 | Buy |
Conventionally recorded. Western Digital's own client SMR list names which models are shingled and the WD10EZEX is not among them, with the document stating that all other capacity points use CMR. That is a manufacturer statement rather than an inference from the family name.
Some are. WD names the 2TB WD20EZAZ and the 6TB WD60EZAZ as shingled on its own list, along with the 1TB and 2TB 2.5-inch WD Blue models. The family answer and the model answer differ, which is why the part number is what matters.
Usually nothing dramatic and quickly, which is why people do it. Over time the issues are duty cycle against a continuous-operation environment, vibration in a multi-bay chassis, and error-recovery timing that can cause a controller to drop a healthy drive mid-recovery.
For an array, yes. It buys conventional recording guaranteed across the line, a longer warranty, NAS-oriented error recovery timing and vibration handling. The price difference at a given capacity is smaller than most people expect relative to what a failed rebuild costs.